Thank you anon for the djvu add, I simply switched over and did ocr with tesseract. I didn't like Munkres sort (too verbose imo) this one is far better.

-- Reviews

when i used to be a pupil, this and Munkres have been the topology books opposed to which each and every different publication was once measured.

And whereas Munkres was once of a extra introductory taste, this used to be the genuine deal.

----

There are just a number of vintage encyclopaedic texts on undergraduate topology, and Dugundji's is considered one of them. And between such books, this can be my favorite as the others are too out of date or too voluminous. Dugundji's ebook is brief, smooth, and impeccable. It covers each subject an undergraduate may still understand or even extra. it's nonetheless necessary for me after years of use. It exposes all very important strategies of set topology and offers a brief yet targeted advent to algebraic topology.
You won't remorse to learn it.

----

One of the easiest Topology books i've got learn. even if the publication has no figures (as one may anticipate from a topology book), virtually each aspect is roofed and there will not be vague components within the proofs. for instance, the booklet by way of Willard can be stable, yet in a few elements there are extra advanced info left for the reader. I took a simple topology graduate point direction at the first 1/2 2007, which consisted on fixing the issues during this ebook. We have been capable of finding a few difficulties that requested to turn out whatever fake, yet they have been 3 or 4 between all of the difficulties from sections III to VIII. besides, this publication is a vintage for you to personal in the event you plan to paintings in topology or at the least learn it whereas learning the topic. It's only a disgrace that the publication is out of print.

This considerably increased moment variation of Riemann, Topology, and Physics combines a desirable account of the existence and paintings of Bernhard Riemann with a lucid dialogue of present interplay among topology and physics, the writer, a individual mathematical physicist, takes into consideration his personal study on the Riemann information of Göttingen collage and advancements over the past decade that attach Riemann with various major principles and strategies mirrored all through modern arithmetic and physics.

Additional info for A Mathematician and His Mathematical Work: Selected Papers of S S Chern

Sample text

5) is entirely evaluated in Rn and does no longer refer to M itself. This suggest to build topological manifolds by patching together local charts provided the changes of coordinates satisfy the cocycle condition. This is indeed possible by the following construction: Let I be an index set and let Vi ⊆ Rn be non-empty and open for i ∈ I . Moreover, let Vi j ⊆ V j be an open subset for every pair i = j. 6) ϕi j : Vi j −→ V ji In particular, we require Vi j = ∅ iff V ji = ∅. It will be useful to set Vii = Vi and ϕii = idVi for all i ∈ I .

Indeed, for O ⊆ M open the preimage of O is ι−1 (O) = N ∩ O which is open in N by the very definition of the subspace topology. Moreover, ι is clearly a bijection onto its image. Finally, the homeomorphism property is clear by the very definition. This example is the prototype of an embedding and motivates the name. 8 Let f : (M, M) −→ (N , N ) be a map between topological spaces. Then the following statements are equivalent: 24 (i) (ii) (iii) (iv) 2 Topological Spaces and Continuity The map f is a homeomorphism.

9 (Closures, open interiors, and boundaries) Find and describe examples of topological spaces (M, M) and subsets A, B ⊆ M for the following statements: (i) The boundary of the boundary of a subset can but needs not to be empty. (ii) Let A ⊆ B. Show that the following three situations are possible: a strict inclusion ∂ A ⊆ ∂ B, a strict inclusion ∂ B ⊆ ∂ A, a trivial intersection ∂ A∩∂ B = ∅ with both boundaries being non-empty. (iii) The open interior of a union A ∪ B can be strictly larger than the union of the open interiors A◦ ∪ B ◦ .